39 Result(s)
within
Ian Moult
Physics
Elementary Particles, Quantum Field Theory
Quantum Field Theories, String Theory
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Article
Open AccessPrecision photon spectra for wino annihilation
We provide precise predictions for the hard photon spectrum resulting from neutral SU(2)W triplet (wino) dark matter annihilation. Our calculation is performed utilizing an effective field theory expansion around...
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Open AccessPower corrections for N-jettiness subtractions at \( \mathcal{O}\left({\alpha}_s\right) \)
We continue the study of power corrections for N -jettiness subtractions by analytically computing the complete next-to-leading power corrections at ...
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Article
Open AccessBoosting \( H\to b\overline{b} \) with machine learning
High-pT Higgs production at hadron colliders provides a direct probe of the internal structure of the gg → H loop with the ...
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Open AccessSimplicity from recoil: the three-loop soft function and factorization for the energy-energy correlation
We derive an operator based factorization theorem for the energy-energy correlation (EEC) observable in the back-to-back region, allowing the cross section to be written as a convolution of hard, jet and soft ...
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Open AccessFirst subleading power resummation for event shapes
We derive and analytically solve renormalization group (RG) equations of gauge invariant non-local Wilson line operators which resum logarithms for event shape observables τ at subleading power in the τ ≪ 1 expan...
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Open AccessConvolved substructure: analytically decorrelating jet substructure observables
A number of recent applications of jet substructure, in particular searches for light new particles, require substructure observables that are decorrelated with the jet mass. In this paper we introduce the Con...
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Article
Open AccessResummed photon spectra for WIMP annihilation
We construct an effective field theory (EFT) description of the hard photon spectrum for heavy WIMP annihilation. This facilitates precision predictions relevant for line searches, and allows the incorporation...
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Open AccessFactorization and resummation for groomed multi-prong jet shapes
Observables which distinguish boosted topologies from QCD jets are playing an increasingly important role at the Large Hadron Collider (LHC). These observables are often used in conjunction with jet grooming a...
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Open AccessFermionic Glauber operators and quark reggeization
We derive, in the framework of soft-collinear effective field theory (SCET), a Lagrangian describing the t-channel exchange of Glauber quarks in the Regge limit. The Glauber quarks are not dynamical, but are inco...
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Open AccessA complete basis of helicity operators for subleading factorization
Factorization theorems underly our ability to make predictions for many processes involving the strong interaction. Although typically formulated at leading power, the study of factorization at subleading powe...
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Open AccessA subleading operator basis and matching for gg → H
The Soft Collinear Effective Theory (SCET) is a powerful framework for studying factorization of amplitudes and cross sections in QCD. While factorization at leading power has been well studied, much less is k...
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Open AccessNew angles on energy correlation functions
Jet substructure observables, designed to identify specific features within jets, play an essential role at the Large Hadron Collider (LHC), both for searching for signals beyond the Standard Model and for tes...
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Open AccessThe analytic structure of non-global logarithms: convergence of the dressed gluon expansion
Non-global logarithms (NGLs) are the leading manifestation of correlations between distinct phase space regions in QCD and gauge theories and have proven a challenge to understand using traditional resummation...
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Article
Open AccessBuilding blocks for subleading helicity operators
On-shell helicity methods provide powerful tools for determining scattering amplitudes, which have a one-to-one correspondence with leading power helicity operators in the Soft-Collinear Effective Theory (SCET...
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Open AccessAnalytic boosted boson discrimination
Observables which discriminate boosted topologies from massive QCD jets are of great importance for the success of the jet substructure program at the Large Hadron Collider. Such observables, while both widely...
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Open AccessNon-global logarithms, factorization, and the soft substructure of jets
An outstanding problem in QCD and jet physics is the factorization and resummation of logarithms that arise due to phase space constraints, so-called non-global logarithms (NGLs). In this paper, we show that N...
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Open AccessPower counting to better jet observables
Optimized jet substructure observables for identifying boosted topologies will play an essential role in maximizing the physics reach of the Large Hadron Collider. Ideally, the design of discriminating variabl...
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Open AccessJet Vetoes interfering with H → WW
Far off-shell Higgs production in H → WW, ZZ, is a particularly powerful probe of Higgs properties, allowing one to disentangle Higgs width and coupling information unavailable in on-shell rate measurements. Thes...
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Open AccessToward multi-differential cross sections: measuring two angularities on a single jet
The analytic study of differential cross sections in QCD has typically focused on individual observables, such as mass or thrust, to great success. Here, we present a first study of double differential jet cro...
